Question: When was Eberhard Umbach the director of the Karlsruhe Institute of Technology?
Paraphrase: When was the Karlsruhe Institute of Technology directed by Eberhard Umbach?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q309988 p:P1037 ?s . ?s ps:P1037 wd:Q77995 . ?s pq:P580 ?value}